The brilliant teacher and researcher in Soran University, faculty of science Prof. Dr. Ebtisam Kamal in her newest academic and career published a research under the title (Direct Contact Heat Exchange for Energy Recovery from Hot Temperature Petroleum Refinery Streams) in a scientific journal in America named (International Journal of Advanced and Multidisciplinary Engineering Science). 

The link of the research:

http://article.sapub.org/10.5923.j.james.20170101.01.html